The following pages describe the prehistory of An Bhá nan Éirith Ghréine, in chronological order from 9000 BC till 2000 BC. * River Lewhorn Upper Paleolithic Cultural Region (9000 BC - 3700 BC) * River Lewhorn Earthwork Culture (3700 BC - 3300 BC) * Bronze Age around the River Lewhorn (3300 BC - 2800 BC) * Lewhorn Massacre - massacre that took place around 2940 BC near where currently the neighbourhood of Ábergheoinn is located. * Beginning of the Iron Age around the River Lewhorn (2800 BC - 2000 BC)